Update quinn-proto requirement from 0.8 to 0.9

[dependabot]

Updates the requirements on quinn-proto to permit the latest version.

Release notes

Sourced from quinn-proto's releases.

0.9.0

We are happy to announce the release of 0.9.0 of Quinn, our pure-Rust implementation of QUIC. This release introduces extensible support for multiple async runtimes, improves Connection API ergonomics, and introduces a variety of new features, performance improvements, and bugfixes.

Important changes

• Abstract runtime support (#1364, thanks to @​yu-re-ka)
• Replace NewConnection struct with Connection methods (#1357)
• Replace Incoming stream with Endpoint::accept async method (#1426)

Functional improvements

• Add additional metrics for lost packets and bytes (#1248, thanks to @​Matthias247)
• Implement draft-ietf-quic-bit-grease-02 (#1286)
• Allow adjustment of per-connection concurrent stream limits (#1315)
• Allow initial maximum UDP payload size to be configured (#1379)
• Configure receive window per connection (#1386, thanks to @​lijunwangs)
• Define Connection::closed() helper to await connection termination (#1396)
• Expose a getter for the close reason (#1424)
• Accessor for free datagram send buffer space (#1423)

Performance improvements

• Enable UDP GRO (#1350, #1354; thanks to @​alessandrod)
• Only send ACKs when they've changed (#1245)
• Other ACK improvements (#1415)

Bug fixes

• Tolerate wide IP_TOS cmsgs (#1274)
• Identify zero-length connections by four-tuple (#1306)
• Retry token fixes (#1332)
• Fix Linux DF bit setting for IPv6-mapped IPv4 addresses (#1381)
• Fix build errors so quinn-proto can be used under wasm32-unknown-unknown (#1387, thanks to @​thombles)
• Disable IP fragmentation on Windows (#1383)
• Check QUIC bit in short headers (#1404, thanks to @​thekuwayama)
• Fix stopped streams not issuing ID credit when reset (#1422)

Other improvements

• Replace futures-util with optional futures-io dep (#1263)
• Strip down futures-* dependencies (#1273)
• Reexport UnknownStream (#1268)
• Replace Broadcast helper with tokio::sync::Notify (#1264)
• Rely on rustls to check for ALPN failure (#1258)
• Use config to reject connections rather than extra state (#1247)
• Adjust link to quinn crate entry point in docs (#1241, thanks to @​themaxdavitt)
• Expose RttEstimator interface publicly (#1243, thanks to @​BiagioFesta)
• Replace fxhash with rustc_hash (#1246)
• Don't update remote client CIDs gratuitously (#1294)
• Change overly verbose info span to debug (#1351, thanks @​alessandrod)

... (truncated)

Commits

• b80baa0 Add --initial-max-udp-payload-size command line option for perf
• cebfb27 Add --keylog command line option for perf client and server
• 28a2c80 quinn: bump dependency on tokio to 1.13
• 57bd764 quinn-udp: bump version to 0.3
• 4c4da51 Bump version numbers for 0.9 release
• 00fb347 Move idle Notify handle into endpoint Shared
• 7d51d2e Remove Incoming stream in favor of Endpoint::accept
• b885739 Introduce Endpoint::accept method for better ergonomics
• c630595 Update book for removal of NewConnection
• feca8ab Accessor for free datagram send buffer space
• Additional commits viewable in compare view

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